Fabio
c36510c21e
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44 lines
1.8 KiB
C++
44 lines
1.8 KiB
C++
#pragma once
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#include "engine/framework/runtime/session.h"
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#include "engine/framework/runtime/graph_optimizer.h"
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#include "engine/community_models/parakeet_tdt/frontend.h"
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#include <memory>
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#include <vector>
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namespace engine::community_models::parakeet_tdt {
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// Model-local adaptation of the publisher's 250 ms input prefix. The ordinary
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// Parakeet and Phonon sessions keep their existing preprocessing and clocks.
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inline constexpr int64_t kBark3InputPrefixSamples = 4000;
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runtime::GraphOptimizationOptions bark3_encoder_graph_options(runtime::GraphOptimizationBackend backend);
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// Cache only unnormalized, context-independent log-mel frames. Each window
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// still recomputes its boundary frames and its whole-window normalization;
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// no encoder/attention state is reused.
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// Windows advance along one immutable waveform. Reset before another stream.
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class BarkStreamingFrontend final : public WindowFrontend {
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public:
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explicit BarkStreamingFrontend(std::shared_ptr<const ParakeetTDTAssets> assets);
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ParakeetFrontendFeatures extract(const runtime::AudioBuffer & window, int64_t start_sample) override;
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void reset() override;
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private:
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engine::audio::NemoMelFrontend raw_frontend_;
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int64_t sample_rate_;
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int64_t hop_;
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int64_t half_fft_;
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int64_t feature_dim_;
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int64_t cached_start_ = 0;
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int64_t cached_samples_ = 0;
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ParakeetFrontendFeatures cached_;
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};
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void remove_bark3_prefix_timestamps(std::vector<runtime::WordTimestamp> & words, int64_t original_samples);
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std::unique_ptr<runtime::IOfflineVoiceTaskSession> wrap_bark3_offline(
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std::unique_ptr<runtime::IOfflineVoiceTaskSession> session);
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std::unique_ptr<runtime::IStreamingVoiceTaskSession> wrap_bark3_streaming(
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std::unique_ptr<runtime::IStreamingVoiceTaskSession> session);
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} // namespace engine::community_models::parakeet_tdt
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